package com.example.touch.views;

import android.annotation.SuppressLint;
import android.content.Context;
import android.util.AttributeSet;
import android.util.Log;
import android.view.MotionEvent;

import androidx.annotation.Nullable;

public class MultiTouchView extends androidx.appcompat.widget.AppCompatTextView {
   public static final String TAG = "MultiView";
   private float x1, x2, y1, y2;
   public MultiTouchView(Context context) {
      super(context);
   }

   public MultiTouchView(Context context, @Nullable AttributeSet attrs) {
      super(context, attrs);
   }

   @SuppressLint("ClickableViewAccessibility")
   @Override
   public boolean onTouchEvent(MotionEvent event) {
      int index = event.getActionIndex();

      switch (event.getActionMasked()) {
         case MotionEvent.ACTION_DOWN:
            Log.e(TAG,"第1个手指按下");
            break;
         case MotionEvent.ACTION_UP:
            Log.e(TAG,"最后1个手指抬起");
            break;
         case MotionEvent.ACTION_MOVE:
            if (event.getPointerCount() == 2) {
               x2 = event.getX(1);
               y2 = event.getY(1);

               x1 = event.getX(0);
               y1 = event.getY(0);
               Log.d(TAG, "======pointer=====move" + "(" + x1 + "," + y1 + "),(" + x2 + "," + y2+")") ;
            }
            break;
         case MotionEvent.ACTION_POINTER_DOWN:
            Log.e(TAG,"第"+(index+1)+"个手指按下");
            break;
         case MotionEvent.ACTION_POINTER_UP:
            Log.e(TAG,"第"+(index+1)+"个手指抬起");
            break;
      }
      return super.onTouchEvent(event);
   }
}
